I am trying to create a custom Web service dashboard using Built in Business transactions. When i open the web services dashboard from Diagnose performance and check for last 30 mins, it shows transactions(screenshot) now when i go to custom dashboard and select Built in Web services by method option, it doesn't give me all methods which i can see in Web services dashboard. why there is a difference?
The Business Transaction should get you the same as it simply looks at every PurePath and splits by Web Service Method Name. The only explanation I have is that the real time analyzer that analyzes all your purepaths cant keep up with the work and therefore not all PurePaths are Analyzed for BTs. Which means you dont get all your BT data. Check your Dynatrace Server Health Dashboard and see if there are any skipped PurePaths or if the Real Time Analyzer is running into issues
otherwise open a ticket